Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 23 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no, check more (d) no mango is sweet
2. 2.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
3. 3.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Meera is 6 years old. Rohan is 2 years older than Meera. How old is Rohan? (a) 2 (b) 9 (c) not enough info (d) 8
5. 5.🧩 Meera bought 3 pens and a water bottle for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹83 (b) ₹247 (c) not enough info (d) ₹250
6. 6.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
7. 7.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
9. 9.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
10. 10.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
12. 12.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 5 (c) 10 (d) 50
13. 13.🧩 Ananya is 10 years old. Vihaan is 8 years older than Ananya. How old is Vihaan? (a) not enough info (b) 18 (c) 8 (d) 19
14. 14.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 24 (b) 28 (c) 10 (d) not enough info
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
17. 17.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 2 PM
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
19. 19.🧩 Arjun bought 4 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹40 (c) not enough info (d) ₹10
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
21. 21.🧩 Arjun is 10 years old. Nisha is older than Arjun. How old is Nisha? (a) 15 (b) 11 (c) 12 (d) not enough info
22. 22.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 8 (c) 40 (d) 4
23. 23.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
24. 24.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
25. 25.🧩 Meera bought 5 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹25 (d) ₹100
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
27. 27.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) 11 (b) 32 (c) 28 (d) not enough info
28. 28.🧩 Rohan bought 5 mangoes and a bag for ₹220 in all. Each mango cost the same. What did one mango cost? (a) ₹220 (b) ₹44 (c) ₹215 (d) not enough info
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
30. 30.🧩 Aarav bought 5 markers for ₹250 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹55 (c) ₹250 (d) ₹50
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Nisha bought 3 pens and a water bottle for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹240 (b) ₹80 (c) not enough info (d) ₹237
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Vihaan bought 5 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹45 (c) ₹200 (d) ₹40
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
37. 37.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 2 PM (d) 5 PM
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Kabir bought 5 pens and a water bottle for ₹295 in all. Each pen cost the same. What did one pen cost? (a) ₹59 (b) not enough info (c) ₹290 (d) ₹295

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